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@article{MS2_1983__52_166842, author = {Ivan Tafteberg Jakobsen}, title = {On a certain homomorphism properties of graphs {II.}}, journal = {Mathematica Scandinavica}, pages = {229--261}, publisher = {mathdoc}, volume = {52}, year = {1983}, zbl = {0566.05049}, url = {http://geodesic.mathdoc.fr/item/MS2_1983__52_166842/} }
Ivan Tafteberg Jakobsen. On a certain homomorphism properties of graphs II.. Mathematica Scandinavica, Tome 52 (1983), pp. 229-261. http://geodesic.mathdoc.fr/item/MS2_1983__52_166842/